I personally cannot picture the protagonist of Persona 3 being anyone else other than Makoto Yuki, the girl just didn't work for me, like the female Shepard in Mass Effect, so I couldn't care less if they added her or not.
And sorry, but I'm totally gonna buy P3 Reloaded, it looks too awesome to pass, didn't really like P3P, it felt clunky and frustrating, but I enjoyed P3 FES (only The Journey, the Answer was boring as sin).
Although tbh here, Persona 3 and its depressing theme is totally not for me, Persona 4 Golden is a much better game overall and it's more lighthearted, which is something I prefer.
The end of P3's storyline is probably better and more epic, IMHO, but P4 has better pacing throughout. #P4Team